After retiring as a player, St Hilaire returned to Huddersfield on the coaching staff, eventually becoming the club's Senior Academy coach.[5] He left the club in March 2006 and joined Wakefield Trinity Wildcats to become assistant coach to Tony Smith.[6] He left the club when Smith was sacked, and became assistant coach to Steve McNamara at Bradford Bulls later that year.[7]
He was appointed as caretaker coach for the remainder of the 2010 season following the release of McNamara.[8] He returned as Bradford's assistant coach in 2012 under Francis Cummins.[9] He departed the club following Cummins' sacking in 2014.[10]
Personal life
Lee St Hilaire is the brother of former rugby league footballer, Marcus St Hilaire.[11]